200121210199 has 2 divisors, whose sum is σ = 200121210200. Its totient is φ = 200121210198.

The previous prime is 200121210151. The next prime is 200121210227. The reversal of 200121210199 is 991012121002.

It is an a-pointer prime, because the next prime (200121210227) can be obtained adding 200121210199 to its sum of digits (28).

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-200121210199 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (200121210109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100060605099 + 100060605100.

It is an arithmetic number, because the mean of its divisors is an integer number (100060605100).

Almost surely, 2^200121210199 is an apocalyptic number.

200121210199 is a deficient number, since it is larger than the sum of its proper divisors (1).

200121210199 is an equidigital number, since it uses as much as digits as its factorization.

200121210199 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 28.

The spelling of 200121210199 in words is "two hundred billion, one hundred twenty-one million, two hundred ten thousand, one hundred ninety-nine".